Woodbury, MN Accessory Structures: ADU Rules (2026)

Woodbury regulates accessory buildings (detached garages and other accessory structures) under Chapter 24 zoning, but the city's published materials do not describe a separate ADU or second-dwelling permitting track for single-family lots. Accessory buildings are treated as non-habitable structures subject to size, setback, height and material standards rather than as independent dwelling units with kitchens and bathrooms. Because the rules govern accessory buildings generally rather than dwelling units, a homeowner who wants a livable secondary unit cannot assume it is permitted by right and should verify the path with the Planning Division at 651-714-3533. At the state level, there is no Minnesota law currently in force that compels every city to allow ADUs. A 2025 bill (SF 3418, 94th Legislature) was introduced that would require certain cities to permit at least one accessory dwelling unit on residential lots and adopt conforming zoning, but as introduced it is proposed legislation, not enacted law, so it does not yet override Woodbury's local ordinance. Until any statewide mandate takes effect, ADU feasibility in Woodbury is determined by the local zoning code and a case-by-case review with city planning staff. Always treat verbal guidance as preliminary and obtain written confirmation and required permits before construction.